OR *con una abundancia de plantas*

OK, we´re dealing with words which go in and out of fashion here.

Planted means they've lobbed in a lot of greenery, and lushly means they are fully grown plants already, which I originally "boiled down" to frondoso, but the two adjectives (with shared) didn't work for me in Spanish, hence the second half of the sentence.

Atrium is indeed an open patio, but a patio is open unless specified otherwise anyway, which is why I'm tempted to leave it at that, but maybe atrio sounds swankier...

Roof decks, oh so "fashion" are azoteas in Spain's Spanish, and I think that sounds attractive enough already. I also think that the atrium and roof deck may be one and the same, but without the plans, hard to say. Either way, both are shared/communal areas.